A bionic force loading and function detecting experimental platform for an in-vitro shoulder joint

Abstract

The invention provides an experimental platform for bionic force loading of shoulder joint in vitro and its function detection, including a bracket unit, a base unit, a scapula fixation and muscle loading unit, a humerus clamping and rotation measurement unit, a humerus motion guiding arc frame and a humeral head Displacement detection unit. The experimental platform can provide different shoulder joint specimens with fixed static space posture according to the experimental requirements, and cooperate with the fixture to perform static phase adjustment of three degrees of freedom of the glenohumeral joint and one degree of freedom of the scapula. The muscle loading unit is composed of multiple force-transmitting cables and corresponding pneumatic servo systems, which provide the bionic muscle force of each muscle group of the shoulder joint in vitro. Under the control of the computer, the bionic muscle force is applied to the shoulder joint specimen, which can realize the multi-degree-of-freedom movement of the shoulder joint, and at the same time detect the functional parameters of the shoulder joint. The biomechanical data measured by this experimental platform can be used as an important index for shoulder joint function evaluation.

Description

technical field [0001] The invention belongs to the field of in vitro joint biomechanical experiments, in particular to an in vitro shoulder joint bionic force loading and an experimental platform for its function detection. Background technique [0002] The shoulder joint is the most flexible and kinematically complex joint in the human body, capable of flexion, extension, abduction, adduction, external rotation, internal rotation and circular multi-axis motion. Studies have shown that compared with the hip joint of the lower limbs, the shoulder joint has a greater range of motion but poorer stability. The shoulder joint is wrapped with a large number of muscles, which are important for maintaining the stability of the shoulder joint. A rotator cuff tear is a serious injury to the shoulder joint that causes instability of the joint capsule in the anteroposterior direction. Rotator cuff repair surgery can help improve the function of a damaged shoulder joint. The differen...

AI Technical Summary

Problems solved by technology

This invention is a bionic shoulder joint mechanism based on a parallel mechanism. Although it can complete the statics and dynamics simulation of the bionic shoulder joint mechanism, it is greatly simplified due to the huge difference between the mechanical structure of the bionic shoulder joint and the actual shoulder joint structure of the human body. The sho

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